Drazice MT-WH21 User And Installer Manual

Domestic hot water heat pump

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Domestic hot water heat pump

MT-WH21

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Summary of Contents for Drazice MT-WH21

Page 1 User- and installer handbog Domestic hot water heat pump MT-WH21...
Page 2 We reserve the right for printing errors. Chapter DRAŽICE MT-WH21...
Page 3: Table Of Contents
6. Control and Operation ....33 Display ........33 DRAŽICE MT-WH21 Chapter...
Page 4: Important Information
Cleaning and maintenance shall not be made by children without supervision. Do not place flammable materials in contact or close to the unit. The water system and the air system shall be installed as stated in the manual. DRAŽICE MT-WH21 Chapter Important information...
Page 5 The pipe must also be left open to the atmosphere. Temperatures above 90 °C in the heating coil may cause excessive pressures in the refrigerant circuit. DRAŽICE MT-WH21 Chapter Important information...
Page 6: Product Certifications
Copyright © IEC, 2018, Geneva, Switzerland. All rights reserved. Sold by SIS under license from IEC and SEK. No part of this document may be copied, reproduced or distributed in any form without the prior written consent of the IEC. Chapter Important information DRAŽICE MT-WH21...
Page 7: Contry Specific Information
Improper disposal of the product by the user results in Improper disposat of the product by the user results in administrative penalties in accordance with current legis- administrative penalties in accordance with current legis- lation. lation. DRAŽICE MT-WH21 Chapter Important information...
Page 8: Inspection Of The Installation
Outdoor sensor (if required) Room sensor (if required) Thermostat (if required) Safety breaker / fuse Earth circuit-breaker Installer information Company name: Pipe installation Installer name: Contact information: Company name: Electric installation Installer name: Contact information: Chapter Important information DRAŽICE MT-WH21...
Page 9: Check List Before Commissioning
Does the electric cable between the connected units have signal? Are the sensors secured in the rigth places? Is the heat pump on, and the mode set to AUTO? Operating the heat pump Does the heat pump make any unexpected noise? DRAŽICE MT-WH21 Chapter Important information...
Page 10: Delivery And Handling
Transport and storage may take place at temperatures between -10 °C and +50 °C. If the unit has been transported or stored at sub-zero temperatures the unit should be left at room temperatures for 24 hours before commissioning. DRAŽICE MT-WH21 Chapter Delivery and handling...
Page 11: Tranport
CAUTION ☞ If the unit has been tilted more than 45°, the unit must be left in its normal upright position for at least 24 hours before it is started. DRAŽICE MT-WH21 Chapter Delivery and handling...
Page 12: Positioning
• A clearance of 0.5 m around the unit is recommended for easy access. • A clearance of minimum 0.15 m around the unit and minimum 0.3 m over the unit is required. Chapter Delivery and handling DRAŽICE MT-WH21...
Page 13: Installation
1. Remove the packaging from the pallet carefully. 2. Remove the transport fittings from the pallet carefully. 3. Remove the unit off the pallet and place it on the floor. DRAŽICE MT-WH21 Chapter Delivery and handling...
Page 14 7. Set-up the air circuit (See chapter 4). 8. Set-up the electric connections (See chapter 5). When the unit is supplied with electricity, it automatically starts running in its standard operation according to the factory settings as described in Chapter 6. Chapter Delivery and handling DRAŽICE MT-WH21...
Page 15: Heat Pump Design And Dimension
The electric heater can be choosen to be activated when one of the following occur: • Failure of the heat pump operation. • Too high or too low air temperatures. • The quantity of hot water produced is not enough. DRAŽICE MT-WH21 Chapter Heat pump design and dimension...
Page 16: Refrigerant Circuit
(1-4) and the energy supplied to the compressor (2-1). On average, the energy absorbed by the evaporator is more than double of the energy used to run the compressor. Chapter Heat pump design and dimension DRAŽICE MT-WH21...
Page 17: Defrosting
It is not recommended to place the unit in an area with an ambient temperature of 5°C or below. NOTE ⚠ An higher compressor sound can be detected during the defrostning. DRAŽICE MT-WH21 Chapter Heat pump design and dimension...
Page 18 DHWHP. This excess power can be used to activate either the electrical immersion heater, the heat pump (HP) or both. TB1: DC/AC Inverter Chapter Heat pump design and dimension DRAŽICE MT-WH21...
Page 19: Heat Pump Design
Heat pump design Process and Instrumentation Diagram REFRIGERANT CIRCUIT GQ1: Compressor GQ2: Fan RM1: Check valve EP1: Condenser EP2: Evaporator HZ1: Filter drier QN1: Solenoid valve QN2: Thermostatic expansion valve XL3: Service valve DRAŽICE MT-WH21 Chapter Heat pump design and dimension...
Page 20 XL9*: Hot water EB1: Electric heater circulation FR1: Anode EP3*: Coil FN1: Thermal protection EB1: Electric heater FR1: Anode FN1: Thermal protection The items with * are only avaible on units with coil. Chapter Heat pump design and dimension DRAŽICE MT-WH21...
Page 21 GP1*: Additional supply to pump or damper The items with * are only avaible on units with coil. Nomenclature according to standard IEC 81346-1 and 81346-2. Nomenclature according to standard IEC 81346-1 and 81346-2. DRAŽICE MT-WH21 Chapter Heat pump design and dimension...
Page 22: Dimensions
260L Dimensional data A – Height 1610 1960 F – Diameter G - Diameter H – Max diameter Height required for installation 1700 2040 Weight dry/wet (with coil) 94/284 (100/300) 100/350 (120/370) Chapter Heat pump design and dimension DRAŽICE MT-WH21...
Page 23: Installation Of The Unit
As for all pressurized vessels, the heat pump water tank has to have an approved safety valve / Pressure relief valve (pressure setting depending on local rules and regulations) and a non return/check valve on the cold water inlet. DRAŽICE MT-WH21 Chapter Installation of the unit...
Page 24: Water Connections
If the unit is equipped with the hot water circulation access, the middle connecting branch is used for hot water return, XL9. Inlet of fresh cold water is mounted on the bottom connecting branch, XL1. Chapter Installation of the unit DRAŽICE MT-WH21...
Page 25: Safety Valves
The maximum inlet temperature of the heating coil is 90 °C. If there is risk of inlet temperatures above 90 °C the installer must install an external device preventing high inlet temperature to the heating coil. DRAŽICE MT-WH21 Chapter Installation of the unit...
Page 26: Connection Of Condensate Drain
A few days after the initial setup and start-up, check the installation for leaks in the water installation or blockage of the condensate drain. NOTE ⚠ Is the system not properly aerated the unit will alert an error and possible stop all production. Chapter Installation of the unit DRAŽICE MT-WH21...
Page 27: Air Connection
The product is constructed to minimise the sound output, but to ensure maximum noise reduction, it is recommended to install silencer units in between the heat pump and the ventilation system to avoid potential travel of noise from the unit to the ventilation system. DRAŽICE MT-WH21 Chapter Installation of the unit...
Page 28 4) DUCTED UNIT, EXHAUST AIR This is the configuration that normally minimizes the electricity consumption of the unit. It is particularly suggested if there is no cooling demand on the installation site. Chapter Installation of the unit DRAŽICE MT-WH21...
Page 29 If the appliance is used as ducted unit it is highly suggested to manually remove the plastic net by using a set of pliers. This operation allows the unit to run more effi- ciently, since the air pressure losses in the air circuits are minimized. DRAŽICE MT-WH21 Chapter Installation of the unit...
Page 30: Electric Connections
• The first time that the unit is turned on, it will start its operation according to its factory settings. • If some control settings are modified, the unit will start with the same settings at the previous switch off conditions. DRAŽICE MT-WH21 Chapter Electric Connections...
Page 31: Electric Diagram
Electric Diagram 11-01-2017 Rev.:C Wiring ES1028_1 PCB With Hygrostat switch Resistor 10Kohm 0.5Watt Hygrostat switch ES1028_1A DRAŽICE MT-WH21 Chapter Electric Connections...
Page 32: Control And Operation
2. Main menu (Can be open by pressing OK ) 3. OK/Enter 4. Mode (Change with 5. Scroll down 6. Scroll up 7. Return back 8. Information (open with 9. Temperature set point 10. Heat pump operation (Heat pump, Ventilation, Defrosting) 11. Time DRAŽICE MT-WH21 Chapter Control and Operation...
Page 33 MAIN MENU (2) Can be accessed by pressing ( OK ) Submenus: • Temperatures • Functions • General • Installer The menu items with * are only awailable in the version with the internal coil. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 34: Menu Structure
Extra* Relay Solenoid valve Fan speed Compressor Electrical heater Er - Errors T1 Error T2 Error T3 Error T4 Error* T5 Error* Compressor error Evaporator error Evaporator low temp. Evaporator high temp. Er10 Filter Chapter Control and Operation DRAŽICE MT-WH21...
Page 35: General Information
(defrost function) and the extra relay in case of the operation with for example a circulation pump. ERRORS Here is shown the current error / alarms. Go the chapter 8 for futher information regarding troubleshooting. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 36: Mode Menu
D34 - T AIR BOOST is upheld. ☞ CAUTION When BOOST mode is selected, the unit runs in BOOST with electric heater only if the air temperature T1 is below D34 Air T boost. Chapter Control and Operation DRAŽICE MT-WH21...
Page 37 The HOLIDAY mode is connected to the Hot on time function B4 (Hot on time). After the HOLIDAY period is completed, the unit goes back to the previous mode of opera- tion. �� The unit can be turned off by switching to HOLIDAY mode. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 38: Main Menu
Fan setting Fan speed Low tariff Hot on time PV Function* Solar* Floor* Floor T* Cooling* Cooling T* General Reset Info Time Date Language Contrast The table for the main menu contiues on page 38. Chapter Control and Operation DRAŽICE MT-WH21...
Page 39 Here you will find the the option to reset the user setting, adjust the time, date, language or read the current software version. INSTALLER In order to access the Installer Menu, a 4-digits password needs to be entered. The password is: 2016. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 40 2 speeds: The fan is always in operation but it runs normally at a higher speed D6 (Fan AUTO Speed) when the heat pump starts operating and at (B2 Fan speed) when it is not operating. Chapter Control and Operation DRAŽICE MT-WH21...
Page 41 1 to 30 days from the moment in which the Factory setting: OFF function is activated and the HOLIDAY mode is selected. The unit switches to AUTO MODE in the desired number of days. If OFF is selected, the function is not active. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 42 B10 - COOLING T* Cooling T* The air temperature set point (°C) below which the Range: 10 to 30 °C heat pump stops, when the unit is in the Cooling Factory setting: 21 °C function. Chapter Control and Operation DRAŽICE MT-WH21...
Page 43 The day of the week can be selected. C5 - LANGUAGE Language More languages can be selected. Factory setting: English C6 - CONTRAST Contrast The contrast of the screen can be adjusted. Range: 0 - 10 Factory setting: 5 DRAŽICE MT-WH21 Chapter Control and Operation...
Page 44 PV min Voltage EL* PV min time* Solar T max* Solar DT min* Floor T start* Extra function* Smart grid function* Cooling* External control* Filter timer start/stop Filter timer Filter Reset Max temperature HP. Chapter Control and Operation DRAŽICE MT-WH21...
Page 45 The medium fan speed can be adjusted. Factory setting: 50 % (outdoor) D5 - FAN MIN. SPEED Fan min. speed The minimum fan speed can be adjusted. Range: 0 - 100 % Factory setting: 40 % (outdoor) DRAŽICE MT-WH21 Chapter Control and Operation...
Page 46 D14 (Legionella T). The legionella operation works only with the heat pump until 60°C. The remaining temperature lift is accomplished with the electric heater alone. Chapter Control and Operation DRAŽICE MT-WH21...
Page 47 Factory setting: 0 D21 - PV MIN VOLTAGE EL* PV min voltage EL* The minimum voltage (V) required to start the Range: 0 - 10 electric heater when the PV function is active. Factory setting: 0 DRAŽICE MT-WH21 Chapter Control and Operation...
Page 48 SG ECO: The heat pump operates minimizing costs, only the heat pump is activated (SG1 OFF, SG2 ON). SG BLOCK: The unit can be stopped even if there is a need for hot water (SG1 ON, SG2 OFF). Chapter Control and Operation DRAŽICE MT-WH21...
Page 49 Fan min: The minimum fan speed is determind by the settings of B1. Start/stop: If GC1 receives a signal higher than 2V, the unit operation is stopped. �� Defrost functionality is separate from the above and will control the fan speed independet from the external controls. DRAŽICE MT-WH21 Chapter Control and Operation...
Page 50 Factory setting: 1 or 2 model as the spare part. In case the spare part and the orginal fan are different, change the setting acoording to the new fan. 1 = EBM fan 2 = Ziehl-Abegg fan. Chapter Control and Operation DRAŽICE MT-WH21...
Page 51 DRAŽICE MT-WH21 Chapter Control and Operation...
Page 52: Service And Maintenance
2. Relocate the cables from the top part of the EPS housing 3. Remove the top part of the EPS housing of the unit. 4. Clean the evaporator and fan with a brush or a bottle brush. 5. Ensure no blockage in the drain DRAŽICE MT-WH21 Chapter Service and Maintenance...
Page 53: Condensation And Condensate Drain
The pressure relief valve must be operated regularly to remove lime deposits and to verify that it is not blocked. Please note that water may drip from the discharge pipe of the expansion-relief valve due to heating of the water. DRAŽICE MT-WH21 Chapter Service and Maintenance...
Page 54: Disassembly & Decommissioning
• Remove the air ducts and close all supply and extract air dampers so that no condensation forms in the ducts. The unit has to be decommissioned in the most environmentally proper manner. When the product is discarded, please observe the local municipal waste removal regula- tions. Chapter Service and Maintenance DRAŽICE MT-WH21...
Page 55: Operational Disruption
= SG Ready function is active = Switch OFF SG Ready function = Themal switch FN1 opens and stops the power supply to the electric heater = Restore the original conditions of the thermal safety switch FN1. DRAŽICE MT-WH21 Chapter Operational disruption...
Page 56 = Raise the ambient temperature to over 5 °C = The condensation drain not connected or blocked. = Ensure the condensation drain is correctly installed = Flush the drain to remove any blockage. = The defrost valve error Chapter Operational disruption DRAŽICE MT-WH21...
Page 57: Safety Breakers
Then the reset buttons in the center of the breakers can be pressed. This must only be performed by skilled personnel. Morever, an additional thermal safety breaker switches off the compressor in case the compressor surface reaches temperatures above 160°C DRAŽICE MT-WH21 Chapter Operational disruption...
Page 58: Trouble Shooting - Error Codes
Standard setpoint for D33 is 60 °C • Try resetting the power supply. If • Change the PCB. the error reoccur during the time the compressor is turned off, then it is PCB error. Chapter Operational disruption DRAŽICE MT-WH21...
Page 59 = Small temp. difference before and after the TCV. 2. Change the TCV = Temp. difference before and after the compressore is less then 10-15 °C = Low temp. difference before and after the condensator and evapo- rator DRAŽICE MT-WH21 Chapter Operational disruption...
Page 60 • Ventilator not runing 1. Ensure that the wiring is identical and placed right. = No air flow 2. Change the ventilator = No sound emission Chapter Operational disruption DRAŽICE MT-WH21...
Page 61 = Vent output over 30 °C lower evaporator temperature in the refrigerant circuit. Er10 The air filter needs to be replaced. The unit will run as normal. 1. Change the air filter 2. Reset the code/timer. DRAŽICE MT-WH21 Chapter Operational disruption...
Page 62: Technical Data
Ø19 Nominal insulation thickness Corrosion protection Stainless steel Airflow Nominal air flow rate (variable range) 450 (0-800) Maximum fan power consumption Max external static pressure G - Air duct connections Minimum volume of room installation DRAŽICE MT-WH21 Chapter Technical Data...
Page 63 Indoor air at 20°C (EN16147) 4.20 Heat up time hh:mm 07:09 Stand-by heat losses Sound power dB(A) 55.6 ) Hot water temperature, with use of only the heat pump. ) No yet supjected to thirdparty testning. DRAŽICE MT-WH21 Chapter Technical Data...
Page 64: Fan Curve
Fan curve In order to assure an efficient operation, it is suggested to keep the external pressure drops below 200 Pa. Chapter Technical Data DRAŽICE MT-WH21...
Page 65: Energy Label
Inteligentní ovládání (0 = ne, 1 = ano) Mimo špičku (0 = ne, 1 = ano) Objem zásobníku ( l ) V40 – objem smíšené vody při 40 °C ( l ) Revize Datum 25.02.2025 DRAŽICE MT-WH21 Chapter Energy label...
Page 66 Inteligentní ovládání (0 = ne, 1 = ano) Mimo špičku (0 = ne, 1 = ano) Objem zásobníku ( l ) V40 – objem smíšené vody při 40 °C ( l ) Revize Datum 25.02.2025 Chapter Energy label DRAŽICE MT-WH21...
Page 67 Inteligentní ovládání (0 = ne, 1 = ano) Mimo špičku (0 = ne, 1 = ano) Objem zásobníku ( l ) V40 – objem smíšené vody při 40 °C ( l ) Revize Datum 25.02.2025 DRAŽICE MT-WH21 Chapter Energy label...
Page 68 Inteligentní ovládání (0 = ne, 1 = ano) Mimo špičku (0 = ne, 1 = ano) Objem zásobníku ( l ) V40 – objem smíšené vody při 40 °C ( l ) Revize Datum 25.02.2025 Chapter Energy label DRAŽICE MT-WH21...
Page 69 DRAŽICE MT-WH21 Chapter Energy label...
Page 70 Chapter Energy label DRAŽICE MT-WH21...
Page 71 DRAŽICE MT-WH21 Chapter Energy label...
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